Laserfiche WebLink
The pump used to purge and sample the wells was thoroughly cleaned prior to each use by placing it into a <br /> • container of tap water and washing the outside of the pump The disposable hose was discarded after purging <br />' each well <br />' Water(about 360 gallons)in the holding tank was discharged to the sanitary sewer underpermit granted by <br /> City of Stockton Department of Municipal Utilities Purge water from monitor well MW-3A,MW-4,MW-5, <br /> MW-6,MW-7,and MW-9 was stored in the holding tank Purge water from MW-2 and MW-2A was stored <br />' in 55-gallon drums in the garage located at 100 N Hunter Street and meets the requirements for transfer and <br /> disposal at a licensed treatment facility <br /> 1 The groundwater samples were analyzed b EPA Method 8020 for BTEX and b EPA <br /> p Y Y y Method 8015M for <br /> TPH-G Groundwater sample analyses were performed by Sequoia Analytical Laboratory in Walnut Creek, <br /> California <br /> 3.0 MONITORING RESULTS SUMMARY <br /> 3.1 GROUNDWATER PHYSICAL CHARACTERISTICS AND POTENTIOMETRIC <br /> SURFACE ELEVATIONS <br /> Table 3-1 presents a summary of groundwater parameters, depths and elevations Since groundwater <br /> elevations were last taken in September 2002, groundwater elevations have decreased by an average of 0 70 <br /> ft <br /> t <br /> LSPROJECrS�SA14JOQ\HSA52Q09RPr WPV 3 <br />